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  2. Acid rain - Wikipedia

    en.wikipedia.org/wiki/Acid_rain

    Acid rain is rain or any other form of precipitation that is unusually acidic, meaning that it has elevated levels of hydrogen ions (low pH).Most water, including drinking water, has a neutral pH that exists between 6.5 and 8.5, but acid rain has a pH level lower than this and ranges from 4–5 on average.

  3. Freshwater acidification - Wikipedia

    en.wikipedia.org/wiki/Freshwater_acidification

    Diagram depicting the sources and cycles of acid rain precipitation. Freshwater acidification occurs when acidic inputs enter a body of fresh water through the weathering of rocks, invasion of acidifying gas (e.g. carbon dioxide), or by the reduction of acid anions, like sulfate and nitrate within a lake, pond, or reservoir. [1]

  4. Black Triangle (region) - Wikipedia

    en.wikipedia.org/wiki/Black_Triangle_(region)

    For decades, industrially produced air pollutants (chiefly sulfur dioxide), water pollution, acid rain and other effects took an enormous toll on the health of local residents and the surrounding environment. [2] After the Revolutions of 1989 in Eastern Europe, the three nations acted to cut emissions. This has resulted in significant ...

  5. Acid Rain Program - Wikipedia

    en.wikipedia.org/wiki/Acid_Rain_Program

    The Acid Rain Retirement Fund (A.R.R.F) is an all-volunteer, non-profit environmental educational organization, incorporated in Maine, dedicated to reducing pollution by purchasing and "retiring" marketable sulfur dioxide emissions allowances issued by the U.S. Environmental Protection Agency’s Acid Rain Program. A.R.R.F. was created in 1995 ...

  6. List of severe weather phenomena - Wikipedia

    en.wikipedia.org/wiki/List_of_severe_weather...

    Blood rain; Cold drop (Spanish: gota fría; archaic as a meteorological term), colloquially, any high impact rainfall event along the Mediterranean coast of Spain; Drought, a prolonged water supply shortage, often caused by persistent lack of, or much reduced, rainfall; Floods. Flash flood; Rainstorm; Red rain in Kerala (for related phenomena ...

  7. Timeline of history of environmentalism - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_history_of...

    1872 — The term acid rain is coined by Robert Angus Smith in the book Air and Rain. — World's first national park, Yellowstone National Park. — Arbor Day was founded by J. Sterling Morton of Nebraska City, Nebraska. It occurs every year on the last Friday in April in the US. 1873 — International Meteorological Organization is formed.

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  9. U.S.–Canada Air Quality Agreement - Wikipedia

    en.wikipedia.org/wiki/U.S.–Canada_Air_Quality...

    The Eastern Canadian Provinces (dark green) were the focal point in Canada's mitigation plan towards minimizing acid rain in the country, and lead to the implementation of the Eastern Canada Acid Rain Program in 1985. The United States-Canada Air Quality Agreement initially prioritized the reduction of acid rain within each country. [13]